This rechargeable lithium battery is designed for use with the NXT intelligent brick.
Alternative to normal AA batteries
Socket for charger, (70-8538, available separately)
Charges from 0 to full in a maximum of four hours
LEGO type 9693
Suitable for Key Stages 2, 3 & 4 (ages 7 to 16)
This new battery (70-8540, LEGO type 9693) can be used in all LEGO applications in place of the old battery (70-1262, LEGO type 9798). However the new battery (70-8540, LEGO type 9693) MUST ONLY BE USED WITH THE NEW CHARGER (70-8538, LEGO type 8887). The plug and socket on old and new are of different sizes to prevent any wrong combinations from being used. For further details please click on the Adobe logos below.